Windsurfing Fin Box from China
A reinforced plastic or composite fin box that mounts into the bottom of a sailboard to hold interchangeable fins for directional control. This part is classified in HTS 9506.21.8000 due to its sole suitability for sailboards. It supports the US fin box standard common in windsurfing.
Duty Rate — China → United States
17.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Include compatibility charts with major sailboard brands; ensure no dual-use claims for other boards
• Pitfall: Generic 'fin track' descriptions leading to Chapter 39 plastic classification